Composition for the manufacture of artificial stone



I06. COMPOSITIONS,

COATING OR PLASTIC.

UNITED STATES PATENT OFFICE.

JAMES L. TVRAY, OF \VATSEKA, ILLINOIS.

COMPOSITION FOR THE MANUFACTURE OF ARTIFICIAL STONE.

SPECIFICATION forming part of Letters Patent No. 312,057. dated February 10, 1885.

Application filed December 18, 1383. (No specimens.)

To all whom it may concern:

Be it known that 1, JAMES L. WRAY, a citizen of the United States, residing at Watseka, in the county of Iroquois and State of 5 Illinois, have invented a new and useful Composition of Matter to be Used in the Manufacture of Artificial Stone, of which the following is a specification.

This composition of matter consists of lime, 1o alum, glue, and water combined with mortar.

In the preparation of this compound I add to forty gallons of water one-half peek of unslaked lime and five pounds each of alum and ue. su cient quantity of this compound 15 1s en added to ordinarv mortar to bring the mass to a suitable consistency Ior use, when 4 the artificial stone can be formed by spreading the mass to any desired thickness, as in laying pavementgmrby -molding it in blocks 20 of any convenient form and size. It will be understood that I do not confine myself to the precise proportions of ingredi ents above mentioned, as it is obvious that the quantities may be varied to some extent without aifecting the usefulness of the compound for the purpose stated.

I am aware that lime, alum, and glue have heretofore been employed in compounds for artificial stone, together with other materials; but I am not aware that they have ever been used with common mortar, or that a composition consisting only of lime, alum, glue, and 

